168520245 has 16 divisors (see below), whose sum is σ = 269826432. Its totient is φ = 89812800.

The previous prime is 168520211. The next prime is 168520249. The reversal of 168520245 is 542025861.

It is not a de Polignac number, because 168520245 - 2⁶ = 168520181 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168520249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23595 + ... + 29895.

It is an arithmetic number, because the mean of its divisors is an integer number (16864152).

Almost surely, 2^168520245 is an apocalyptic number.

168520245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

168520245 is a deficient number, since it is larger than the sum of its proper divisors (101306187).

168520245 is a wasteful number, since it uses less digits than its factorization.

168520245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8092.

The product of its (nonzero) digits is 19200, while the sum is 33.

The square root of 168520245 is about 12981.5347705886. The cubic root of 168520245 is about 552.3538184000.

The spelling of 168520245 in words is "one hundred sixty-eight million, five hundred twenty thousand, two hundred forty-five".